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题型:阅读理解-阅读单选 难度:0.65 引用次数:295 题号:12892442

Cetaceans(鲸目动物) communicate through sound to find food and to interact socially. Their sounds vary between species and within communities. The long-finned pilot whales can mimic(模仿) artificial noise, but nobody had previously recorded them. A new study, however, found overlap in the cetacean sound book.

Pilot whales and orcas, the two largest species of cetaceans, are often seen in the same environments and are similar sizes, and both live in social groups with strong union, says Charlotte Curé, a bioacoustics researcher at CEREMA Lab in France, who was not involved in the study. Orcas compete for food with long-finned pilot whales and are potentially their predators.

Evidence from orca stomachs shows they do occasionally eat pilot whales. But pilot whales can mob and chase them away, the only cetaceans seen defending themselves from the strong enemies in this way.

Mimicry could serve as an additional defense: “One assumption is that if they use similar sounds, they may not be recognized as prey,” Erbe says. Pilot whales eating orcas’ food remains might go unnoticed if they use orca-like calls. “This is all underwater,” she adds, “so these animals rely on sound for detecting their prey and predators.” Long-finned pilot whales have shown an ability to distinguish between orca calls with different meanings; Curé suggests that instead of tricking orcas, the callers could instead be presenting a new orca sound to other group members.

Additional work would confirm whether mimicry is actually occurring. Researchers could pair their listening data with direct observations of the animals’ interactions in the wild or perhaps even play orca sounds and watch the whales’ reactions.

But if a future experiment used predatory sounds, it would need to be done very carefully. “A reaction to a predator can be very strong,” Curé says. “In some protected areas, you are not allowed to do more than two predatory playbacks per year.”

1. Which of the following is not the pilot whales and orcas share in common?
A.They communicate through sound.
B.They always live together with other group members.
C.They often live in the same environments.
D.They can defend themselves through mimicry.
2. What do we know from the fourth paragraph?
A.The pilot whales mimic the sounds to detect their prey.
B.The pilot whales can pretend to be orcas to share the food remains.
C.The pilot whales only mimic one kind of the sounds of the orcas.
D.The pilot whales can distinguish different meanings of orcas calls to trick them.
3. How do the researcher confirm whether mimicry is actually occurring?
A.By mimicking the sounds in the experiment.
B.By analyzing the data from the cetacean sound book.
C.By listening or playing the sounds and watching the whales’ reactions.
D.By observing the whales from the distance.
4. Which can be a suitable title for the text?
A.Pilot Whales: Copy Orca Calls
B.Pilot Whales and Orcas: Two Largest Animals
C.Orcas: Predators in the Sea.
D.Pilot Whales: Ways to Defend Themselves
2021高三·全国·专题练习 查看更多[1]

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文章大意:这是一篇应用文。给我们介绍了一些物种名录。
【推荐1】

SPECIES DIRECTORY

Scientific NameNeophocaena asiaeorientalis ssp. asiaeorientalisLycaon pictusAteles paniscusUrsus arctos
Common NameYangtze Finless PorpoiseAfrican Wild DogBlack Spider MonkeyBrown Bear
FactsThe Yangtze River, the longest river in Asia, used to be one of the only two rivers in the world that was home to two different species of dolphin—the Yangtze finless porpoise and the Baiji dolphin. However, in 2006 the Baiji dolphin was declared functionally extinct. This was the first time in history that an entire species of dolphin had been wiped off the planet because of human activity. Its close cousin, the Yangtze finless porpoise, is known for its mischievous smile and has a level of intelligence comparable to that of a gorilla. The wild dog is one of the world’s most endangered mammals. The largest populations remain in southern Africa and the southern part of East Africa. Wild dogs are social and gather in packs of around ten individuals, but some packs number more than 40. They are opportunistic predators that hunt medium-sized ruminants(反刍动物), such as gazelles. In a sprint, African wild dogs can reach speeds of more than 44 miles per hour. The black spider monkey—also known as the Guiana or red-faced spider monkey— is found in eastern South America in areas north of the Amazon River. They are one of seven species of spider monkeys found in Latin America and one of the largest primate(灵长目动物的)species in South America. Few animals have captured the imagination like brown bears. They can stand on two legs, walk on the soles of their feet, pick things up with their "fingers,” and often eat what we eat. This—coupled with their ability to communicate with one another through scratch marks left on trees, smells and sounds—establishes a similarity to our own way of life. Some of the largest living carnivores, brown bears have fallen prey to hunting and other conflicts with humans.
Population1,000-1,8001,409/110,000
Length6.2 feet30-56inches16—24 inches(body), 24—32 inches(tail)6.5 feet
HabitatsLakes & RiversDeserts, Forests, GrasslandsTropical and subtropical moist broad-leaf forestsForests, Tundra
Conservation StatusCritically EndangeredEndangeredVulnerableLeast Concern
1. Where can we probably find the passage?
A.A government report on rare animals.B.A popular science fiction about animals.
C.A website about world wildlife.D.A book about endangered animals.
2. If a businessman wants to donate some money to save animals as clever as monkeys in Asia, which species is the best choice for him?
A.Yangtze Finless Porpoise.B.African Wild Dog.
C.Ateles paniscus.D.Ursus arctos.
3. If Mary is interested in raising a rather small forest animal as a pet, which species is the best choice for her?
A.Yangtze Finless Porpoise.B.African Wild Dog.
C.Ateles paniscus.D.Ursus arctos.
2023-07-11更新 | 9次组卷
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【推荐2】D
Their cheery song brightens many a winter's day. But robins are in danger of wearing themselves out by singing too much. Robins are singing all night一as well as during the day, British-based researchers say.
David Dominoni, of Glasgow University, said that light from street lamps, take away signs and homes is affecting the birds' biological clocks, leading to them being wide awake when they should be asleep.
Dr Dominoni, who is putting cameras inside nesting boxes to track sleeping patterns, said lack of sleep could put the birds’ health at risk. His study shows that when robins are exposed to light at night in the lab, it leads to some genes being active             at the wrong time of day. And the more birds are exposed to light, the more active they are at night.
He told people at a conference, "There have been a couple of studies suggesting they are increasing their song output at night and during the day they are still singing. Singing is a costly behaviour and it takes energy. So by increasing their song             output, there might be some costs of energy."
And it is not just robins that are being kept awake by artificial light. Blackbirds and seagulls are also being more nocturnal. Dr Dominoni said, "In Glasgow where I live, gulls are a serious problem. I have people coming to me saying `You are the bird expert. Can you help us kill these gulls?'.During the breeding(繁殖)season, between April and June, they are very active at night and very noisy and people can't sleep."
Although Dr Dominoni has only studied light pollution, other research concluded that robins living in noisy cities have started to sing at night to make themselves heard over loud noise.
However, some birds thrive(兴旺)in noisy environments. A study from California Polytechnic University found more hummingbirds in areas with heavy industrial machinery. It is thought that they are capitalising on their predators(天敌)fleeing to quieter             areas.
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A.The breeding season.
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C.The dangerous environment.
D.The noise from heavy machinery.
2. What is the researchers' concern over the increase of birds' song output?
A.The environment might be polluted.
B.The birds' health might be damaged.
C.The industry cost might be increased.
D.The people's hearing might be affected.
3. What does the underlined word "nocturnal" in Paragraph 5 mean?
A.Active at night.B.Inactive at night.
C.Active during the day.D.Inactive during the day.
4. Why do some birds thrive in noisy environments?
A.Because there are fewer dangers.
B.Because there is more food to eat.
C.Because there is less light pollution
D.Because there are more places to take shelter.
2016-11-26更新 | 1070次组卷
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【推荐3】Shark attacks are usually rare but their in recently years has been put down to one major factor —us.

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The researchers added: Unprovoked shark bite was virtually unheard of in Recife prior to the construction and operation of the Suape Port. “However, due to environmental changes displacing local shark species and the presence of increased shipping activity, Recife is now renowned for having one of the highest rates of shark bites per unit area in the world.”

Most attacks on humans are carried out by great white shark, bull sharks and tiger sharks, with 84% of bites taking place in just six countries or territories, including the US, South Africa, Australia, Brazil, the Bahamas and Reunion.

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4. What’s the author’s purpose in writing the text?
A.To save more sharksB.To ask people to keep away from sharks
C.To catch more sharksD.To decrease shark attacks
2021-07-26更新 | 32次组卷
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